{
  "title": "gemma-4-26B-A4B-it quantization analysis",
  "subtitle": "Mean KL divergence against on-disk size",
  "routed": true,
  "quants": [
    {
      "id": "RedHatAI/gemma-4-26B-A4B-it-FP8-dynamic",
      "creator": "RedHatAI",
      "type": "fp8_per_channel",
      "disk_size_gib": 26.675,
      "size_source": null,
      "mean_kld": 0.6941503893869376,
      "qxq_mean_kld": 0.6941503893869376,
      "bxq_mean_kld": 0.49783177349682506,
      "routing_intervention_delta": 0.19631861589011257,
      "routing_flip_rate": 0.5068283785892634,
      "exact_repeat": true,
      "bxq_omission_reason": null
    },
    {
      "id": "RedHatAI/gemma-4-26B-A4B-it-NVFP4",
      "creator": "RedHatAI",
      "type": "nvfp4",
      "disk_size_gib": 15.296,
      "size_source": null,
      "mean_kld": 1.7796875428831238,
      "qxq_mean_kld": 1.7796875428831238,
      "bxq_mean_kld": 1.5432401050586961,
      "routing_intervention_delta": 0.23644743782442768,
      "routing_flip_rate": 0.7473390513895674,
      "exact_repeat": true,
      "bxq_omission_reason": null
    },
    {
      "id": "bg-digitalservices/Gemma-4-26B-A4B-it-NVFP4",
      "creator": "bg-digitalservices",
      "type": "nvfp4",
      "disk_size_gib": 15.295,
      "size_source": null,
      "mean_kld": 1.8230729220653046,
      "qxq_mean_kld": 1.8230729220653046,
      "bxq_mean_kld": 1.5936130240113748,
      "routing_intervention_delta": 0.22945989805392975,
      "routing_flip_rate": 0.7452410667033057,
      "exact_repeat": true,
      "bxq_omission_reason": null
    },
    {
      "id": "unsloth/gemma-4-26B-A4B-it-NVFP4",
      "creator": "unsloth",
      "type": "nvfp4",
      "disk_size_gib": 15.749,
      "size_source": null,
      "mean_kld": 1.1384601916109958,
      "qxq_mean_kld": 1.1384601916109958,
      "bxq_mean_kld": 0.9558649460177937,
      "routing_intervention_delta": 0.18259524559320206,
      "routing_flip_rate": 0.6530839083618303,
      "exact_repeat": true,
      "bxq_omission_reason": null
    },
    {
      "id": "Neural-ICE/Gemma-4-26B-A4B-it-NVFP4",
      "creator": "Neural-ICE",
      "type": "nvfp4",
      "disk_size_gib": 15.295,
      "size_source": null,
      "mean_kld": 1.8228142090582435,
      "qxq_mean_kld": 1.8228142090582435,
      "bxq_mean_kld": 1.5851210894611856,
      "routing_intervention_delta": 0.23769311959705797,
      "routing_flip_rate": 0.7447776938134397,
      "exact_repeat": true,
      "bxq_omission_reason": null
    },
    {
      "id": "cyankiwi/gemma-4-26B-A4B-it-AWQ-4bit",
      "creator": "cyankiwi",
      "type": "int4_g32_sym",
      "disk_size_gib": 16.011,
      "size_source": null,
      "mean_kld": 1.0262681996551193,
      "qxq_mean_kld": 1.0262681996551193,
      "bxq_mean_kld": 0.8408878556735466,
      "routing_intervention_delta": 0.18538034398157266,
      "routing_flip_rate": 0.6273694481761928,
      "exact_repeat": true,
      "bxq_omission_reason": null
    },
    {
      "id": "dhruvil237/gemma-4-26B-A4B-it-W4A16",
      "creator": "dhruvil237",
      "type": "int4_g64_sym",
      "disk_size_gib": 14.582,
      "size_source": null,
      "mean_kld": 1.1592606765413036,
      "qxq_mean_kld": 1.1592606765413036,
      "bxq_mean_kld": 1.012523505709699,
      "routing_intervention_delta": 0.14673717083160454,
      "routing_flip_rate": 0.6673004065909461,
      "exact_repeat": true,
      "bxq_omission_reason": null
    },
    {
      "id": "Intel/gemma-4-26B-A4B-it-int4-AutoRound",
      "creator": "Intel",
      "type": "int4_g128_sym",
      "disk_size_gib": 14.312,
      "size_source": null,
      "mean_kld": 1.1781628757528868,
      "qxq_mean_kld": 1.1781628757528868,
      "bxq_mean_kld": 0.9030819986997021,
      "routing_intervention_delta": 0.27508087705318474,
      "routing_flip_rate": 0.9307273007924877,
      "exact_repeat": true,
      "bxq_omission_reason": null
    },
    {
      "id": "lcu0312/gemma-4-26B-A4B-it-AWQ-4bit",
      "creator": "lcu0312",
      "type": "int4_g32_sym",
      "disk_size_gib": 16.006,
      "size_source": null,
      "mean_kld": 1.235872207926137,
      "qxq_mean_kld": 1.235872207926137,
      "bxq_mean_kld": 1.0800963559708499,
      "routing_intervention_delta": 0.1557758519552872,
      "routing_flip_rate": 0.6618055767586712,
      "exact_repeat": true,
      "bxq_omission_reason": null
    }
  ],
  "excluded_candidates": [
    {
      "hf_repo": "cklaus/gemma-4-26B-A4B-it-NVFP4",
      "revision": "54218eb0fd33da17632f0d91be841d09a7724a6c",
      "reason": "Scored on vLLM fdc0b57e while every other candidate scored on c798225a, so its report binds a reference capture the family no longer publishes (Law 12) and it ranks in a comparability group of one. Withdrawn rather than rescored: no measurement of this checkpoint is in question, only the provenance it carries."
    }
  ]
}